/Engine/Source/Runtime/GeometryCore/Public/DynamicMesh/DynamicMeshAttributeSet.h
Skin weights Create a new skin weights attribute with a given skin weights profile name. If an attribute already exists with that name, that existing attribute will be deleted.
void AttachSkinWeightsAttribute ( [FName](API\Runtime\Core\UObject\FName) InProfileName, [FDynamicMeshVertexSkinWeightsAttribute](API\Runtime\GeometryCore\DynamicMesh\FDynamicMeshVertexSkinWeightsAtt-) * InAttribute )